Add multiple items to an array

Question

So lets say I want to make an array of nine country names. I have the code to create the array:

String[] countryName = new String[9];

Lets say I wanted to add nine unique country names to this array. I could do something like this:

countryName[0] = "Mexico";
countryName[1] = "United States";

and so on. But is there a way I could add all of the names at once? Maybe something like an add() statement?

possible duplicate of [How to declare an array in Java?](http://stackoverflow.com/questions/1200621/how-to-declare-an-array-in-java) — Smutje, Jul 03 '14 at 10:10
You can just use `String[] countryName = { "Mexico", "United States", ... };`. I would strongly advise reading a good Java book for this sort of thing though - it's a much more efficient way of learning the basics of a language than asking specific questions on Stack Overflow. — Jon Skeet, Jul 03 '14 at 10:11

score 9 · Accepted Answer · answered Jul 03 '14 at 10:13

9

you can initialize the array with:

String[] countryName = new String[]{"Mexico", "Italy", "Spain"};

answered Jul 03 '14 at 10:13

Michel Foucault

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and how is it different from what Jon Skeet has advised? – Shail016 Jul 03 '14 at 10:28
3

@Shail016 by being an answer and not a comment, probably. – user253751 Jul 03 '14 at 10:47
well I just observed :) – Shail016 Jul 03 '14 at 10:59

Ilya · Answer 2 · 2014-07-03T10:22:28.717

1

You can write simple utility method using varargs

static void addAll(String[] arr, String ... elements)
{
   if (elements != null)
   {
      System.arraycopy(elements, 0, arr, 0, elements.length);
   }
}

Usage

addAll(countryName, "Mexico", "US", "Ukraine");

edited Jul 03 '14 at 10:22

answered Jul 03 '14 at 10:14

Ilya

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ΔȺȾΔ · Answer 3 · 2014-07-05T03:21:39.950

0

Enlist all contries in String and use split

   String str="Country1,Country2,Country3";
   String array[]=str.split(",");//You even don't need to initialize array

Use delimeter carefully to avoid extra spaces.

NOTE: As this is one of the ways to add values to array but still I suggest you to go for Michel Foucault's answer as split will have more overhead than direct initialization.

edited Jul 05 '14 at 03:21

answered Jul 03 '14 at 10:13

ΔȺȾΔ

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I like me your solution ;) – Michel Foucault Jul 03 '14 at 10:26

score 0 · Answer 4 · edited Jul 03 '14 at 10:33

0

Use an ArrayList this has the Add method.

ArrayList<String> countryName = new ArrayList<String>();
countryName.add("Mexico");
countryName.add("United States");
countryName.add("Dominican Republic");
countryName.add("...");

edited Jul 03 '14 at 10:33

Holt

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answered Jul 03 '14 at 10:16

DannyFeliz

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for this one can also do `Arrays.asList("country1", "country2");` – Shail016 Jul 03 '14 at 10:23

Add multiple items to an array

4 Answers4